Particle production in Pb–Pb collisions at the Large Hadron Collider (LHC) has been extensively studied [1]}, [2]}, [3]}. The observed production pattern is rather well described in equilibrium thermal models [4]}, [5]}, [6]}, [7]}. Within this approach, the chemical freeze-out temperature \(T_{\mathrm {chem}}\) , the volume \(V\)  and the baryo-chemical potential \( \mu _{B}\)  are the only three free parameters.
Even loosely bound states such as the deuteron and hypertriton and their anti-particles have been observed [8]}, [9]}, [10]} and their rapidity densities are properly described [11]}, [12]}, [13]}, [14]}, [15]}, [16]}, [17]}.
Consequently other loosely bound statesThe expected masses of these states are some MeV below the sum of the mass of their constituents. such as the H-dibaryon and the \(\Lambda \) n are expected to be produced with corresponding yields.
